Thanks!
Answer:
Yes I have. I bought some from my dentist about a year ago. They work VERY good! My teeth are whiter within a few days. I sometimes use them for about a week before going to a major function, for example my best friends wedding. I love them!!
While these are not as good as having a dentist whiten your teeth, they are a good substitute and are lots better than what you can buy at Wal-Mart, etc. They do only work on your six front teeth and are hard to use on the bottom ones as you tend to chew them. Good luck.